Water-jacket.



G. W. HAWKES.

WATER JAGKET. APPLICATION TILED JULY31, mos.

Patented Jan. 5, 1909.

- I MTNEssEs; W

CHARLES W. HAWKES, OF NEW YORK, N. Y.

To all whom it may concern:

Be it known that I, CHARLES WI HAwKEs, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in ater- Jackets, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in waterjacket constructions for cupola, blast and similar furnaces, and it consists in the novel construction of jacket more fully set forth in the specification and. pointed out in the claims.

In the drawings, Figure 1 is a longitudinal section of the jacket taken on the. line l -i of Fig. 2; Fig. 2 is an elevation of one--half of the jacket broken above the twyers; Fig. 3 is an enlarged section showing the welded sta -bolt spacing the water-jacket sheets or wa ls a art; and Fig. 4 is a section showing a stayolt provided initially with a limiting shoulder for engagement with the adjacent sheet, before the parts were welded.

The present improvement is in the nature of an extension of the principle covered by U. S. Patent on water-jacket numbered 815,013 issued to me under date of March 13, 1906, and while contemplating the several objects specified in said prior patent, the present jacket possesses the additional advantage in that it altogether precludes the possibility of leakage owing to the fact that the stay-bolts spacing apart the inside and outside sheets of the jacket are welded to both sheets. The advantage thus accruing from the specific modification made the subect-rnatter of the present application will be lietter apparent from a detailed description of the invention which isas iollows:-

Referring to the drawings, and particularly to Figs. 1 to 3 inclusive, 1, represents the inside sheet and 2 the outside sheet of the water-jacket. In the present improvement all rivet-heads are eliminated from both the inside and outside sheets of the jacket. This I accomplish by welding first to the inside (or outside) sheet what constitute stay-bolts (or equivalent spacing members) in the prevailing forms of construction. Such welded stay-bolts are represented by the reference- Specification of Letters Patent.

Application filed July 31, 1908.

Patented Jan. 5, 1909.

Serial No. 446,306.

numeral 3 in the drawing. After the sheets of the jacket have been assembled the opposite ends of the stay-bolts are welded to the opposite sheet, so that in the completed jacket both sheets are spaced apart by staybolts welded to both jackets. The methods of first welding the bolts to one of the sheets may correspond to any well known method in practice. In order to weld the free ends of the stay-bolts to the opposite sheet, openings are first formed in said sheet to receive the ends of the bolts for the assembled position of the sheets, when the ends so passed through are welded to the sheet by any of the means well known to the arts. in Fig. 3 the dotted lines shown on the outside sheet 2 in continuation of the peripheral elements of the bolt, indicate where the hole was through which the bolt was passed before the welding operation was completed.

A jacket of this character is practically indestructible since the stay-bolts being welded to the sheets or walls thereof become virtually integral therewith and leakage at these points is impossible.

Of course the application of the invention need not be rstricted specifically to water-- jackets will serve its purpose in airjackets, steam-jackets, or gas-jackets of any description.

in Fig. l I show a stay-bolt originally provided with a reduced stem passed through the outside sheet, leaving a limiting shoulder for the sheet to rest on, but after the arts were Welded, these features become ob iterated. However, the dotted lines at the terminal of the stay-bolt where it joins the outside sheet illustrate the position of the stem originally formed on the staybolt.

Having described my invention, what I y-bolts being sheet and an utside sheet, and staybolts .hm'mg one end Welded to one of the sheets,

4 A wutcr-jwket comprising an inside and the opposite and passed through. the outside sheet and Welded thereto.

In cestunony whereof I affix my slgnature,

and the opposite end psv'sed through the 0pin presence of two witnesses.

5, posite sheet and Welded thereto.

5. A Water-jacket comprising an inside} sheet and an outsidga sheet, and stay-bolts hsdvmg 0110- end Welded. to the lnslde sheet,

()HARLES W HAWKES.

Witnesses 7' FREDERICK B. BLAGKMAN, SIDNEY RQLLE. 

